xtables: remove xtables_set_revision function

Since iptables uses its own copies of the header files anyway where the
revision field is exposed, there is no reach to access name[] beyond its
size.

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
diff --git a/ip6tables.c b/ip6tables.c
index 2fff21b..6c5d124 100644
--- a/ip6tables.c
+++ b/ip6tables.c
@@ -1558,8 +1558,7 @@
 				target->t = xtables_calloc(1, size);
 				target->t->u.target_size = size;
 				strcpy(target->t->u.user.name, jumpto);
-				xtables_set_revision(target->t->u.user.name,
-					     target->revision);
+				target->t->u.user.revision = target->revision;
 				if (target->init != NULL)
 					target->init(target->t);
 				opts = xtables_merge_options(opts,
@@ -1611,7 +1610,7 @@
 			m->m = xtables_calloc(1, size);
 			m->m->u.match_size = size;
 			strcpy(m->m->u.user.name, m->name);
-			xtables_set_revision(m->m->u.user.name, m->revision);
+			m->m->u.user.revision = m->revision;
 			if (m->init != NULL)
 				m->init(m->m);
 			if (m != m->next)
@@ -1759,8 +1758,7 @@
 					m->m = xtables_calloc(1, size);
 					m->m->u.match_size = size;
 					strcpy(m->m->u.user.name, m->name);
-					xtables_set_revision(m->m->u.user.name,
-						     m->revision);
+					m->m->u.user.revision = m->revision;
 					if (m->init != NULL)
 						m->init(m->m);